i have a check engine light on on my 89 pickup. now there is supposed to be a way to jump a wire to get it to blink and get codes. but i am not sure how. anyone help me out? also were to look up codes.

If it has a bad O2 sensor, I was told you can pull them out (if you can get it out), burn alll the crap off it with a propane torch and you will be good to go. THey aren't cheap. I found out about this trick after paying @ $100 for one.